International time and day clock



March 18, 1947. w s 2,417,695

INTERNATIONAL TIME AND DAY CLOCK Filed June 8, 194a s Sheets-Sheet 1 pm... g9!

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J. E. LEWIS INTERNATIONAL TIME AND DAY CLOCK Filed June 8, 1946 5 Sheets-Sheet 2 fry/@7275?" @meslflewz's March 18, 1947. I J. E. LEWIS 2,417,695

INTERNATIONAL TIME AND DAY CLOCK 3 Sheets-Sheet 3 Filed June 8, 1946 fra /97228? L/CZmeS-Z Zewz's Patented Mar. 18, 1947 UNITED STATES PATENT OFFICE INTERNATIONAL TIME AND DAY CLOCK James E. Lewis, Chicago, Ill.

Application June 8, 1946, Serial No. 675,355

9 Claims.

This invention relates to an international time and day clock, and its principal object is the provision of a clock whereby the time of day r nigh at many geographical places on the earths surface, may be observed at any of said geographical places.

In the present exemplification of the invention, the hour indicator of the clock has been divided into twenty-four equal divisions, designating twenty-four different cities or countries around the earths surface, but manifestly the hour indicator may be divided into any desirable number of divisions representing geographical locations around the earths surface.

Another object is to p1 ovide a simple, substantial and practical clock embodying the above features.

With these and other objects and advantages in view, this invention consists in the several novel features hereinafter fully set forth, and more particularly defined in the appended claims.

The invention is clearly illustrated in the drawings accompanying this specification, in which:

Fig. 1 is a front elevation of an international time and day clock, embodying a simple form of the present invention.

Fig. 2 is a view partly in front elevation and partly in vertical longitudinal section of the clock, illustrating the interior mechanism thereof.

Fig. 3 is a vertical, cross-section taken on the line 33 of Fig. 2.

Fig. 4 is a detail vertical cross-section taken on the line 44 of Fig. 2;

Fig. 5 is a detail vertical cross-section taken on the line 5-5 of Fig. 2;

Fig. 6 is a face view laid out flat, of a day of I the Week indicator;

Fig. 7 is a face view laid out flat, of an hour indicator;

Fig. 8 is a face view laid out flat, of an hour indicator strip;

Figs. 9 and 10 are face views laid out flat, of minutes indicating strips; and

Fig. 11 is a face view laid out flat of a seconds indicating strip.

Referring to said drawings, which are merely illustrative of one embodiment of the invention, the reference character H designates a case desirably of rectangular form, having windows or sight openings I2, l3, I4, I 5 in its front Wall 16, through which the time of day or night is displayed upon an hour drum l1, two minutes drums l8 and I9 and a seconds drum 20. The numerals designating the hours may be displayed on a strip H secured to the cylindrical face of the drum l'!, the numerals designating the minutes on strips I8 19 and the numerals designating seconds on a strip 2M, each strip respectively secured to the cylindrical face of its associated drum.

Below sight openings l2, l3, l4 and iii are two elongated slots 2|, 22, separated by a plate 23, on which plate are displayed geographical locations of the earths surface such, for example, as cities and countries arranged progressively around the earths surface. As shown, the plate 23 is divided into twenty-four divisions, one division for every hour of the day and night.

The frame of the clock mechanism may comprise a base member 25 to which are secured two side frame members 25 connected by tie rods 25.

Rotatably mounted on a shaft or arbor 24, secured in the side frame members 25* of the frame work for the clock mechanism, is a rotatable hour displaying member, here shown in the frame of an hour drum 25, upon the cylindrical face of which are displayed the twenty-four hours of the day and night, one series for each division of the plate 23. The numerals indicating the hours of the day and night may be displayed upon a sheet 26 (see Fig. '7.) secured to the cylindrical face of the drum 25, and said numerals are arranged in twenty-four series running circumferentially around the drum, and are also arranged in series running lengthwise of the drum, as is clearly illustrated in Fig. '7.

The numerals indicating hours after 12 oclock noon, are distinguished from the hours before noon by suitable shading, or otherwise as isshown in Fig. 7. Inasmuch as there are twenty-four geographical locations displayed on the plate 23, there are twenty-four series of hour designating numerals displayed in each longitudinal series and, inasmuch as the geographical locations are spaced one hours time apart, for convenience the numeral indicating 1 oclock is placed at the lower left-hand corner of the chart, as seen in Fig. '7, and the numerals progress numerically across the chart from left to right and around the cylindrical face as shown. In an adjacent longitudinal row the numerals start with the numeral 2 at the left-hand side of the chart, and progress in numerical order across the length of the drum, this row terminating in the numeral 1' Th next row of the series starts with the numeral 3 at the left-hand side of the chart, and the next row starts with the numeral 4, and so on to and including the numeral 12,. and then the rows start with the numeral 1, then 2, then 3 and so on, as is clearly indicated in Fig. '7.

Located below the hour drum 25 is a series of smaller drums 2'1, upon each of which is displayed the days of the week (see Figs. 2 and 6) disposed circumferentially around the drums 21. Each of said drums 2'! is independently rotatably mounted upon a shaft 23, secured in the side frame members 25*, and a drum 2'! is rotated one step as the hour of 12 oclock midnight for the associated drum 2? comes into view at the slot 2!, so as to bring the next succeeding day of the week into view.

The several drums ll, 13, l 3, are rotatably mounted on a shaft 39 carried by the side frame members and are driven by a motor 2'6, preferably a. synchronous electric motor, mounted on a bracket 25, carried by one of the side frame members 25*. The motor includes a speed reducing gearing 29 the final or drive shaft 35 of which is rotated at a speed of one revolution per minute (1 R. P. M). The drum 20, which displays the seconds has a gear wheel 3i fastened to one side thereof, which is driven from a gear wheel 32 on the shaft 35 through idle pinions 33, 34. The gear ratio between the gear wheels 32, Ill, is one to one, whereby the drum 20 is given one complete revolution per minute.

The drum 19, which displays the units column of minutes, is intermittently driven from the shaft by an arm 36 fast on the shaft 30, and arranged to engage and move pins 36, of which there are ten, one for each numeral indicating minutes on the drum IS. The pins 3'! project from one side of the drum l9. One of the pins, indicated by the character 37, is made longer than the others, and is arranged to encounter the teeth of a ratchet wheel 33. mounted on a shaft or rod 33, journaled in the side frame members 25 The ratchet wheel is operatively connected to a pinion 43 by the shaft 39, and the tens column minutes indicating drum l8 has a gear wheel 4! secured to one side thereof, which meshes with the pinion 40, The drum I3 has the numerals 0 to 5 displayed. circumferentially twice thereon (see 9). The ratchet wheel 38, and pinion 49, rotate the gear wheel 4i and therewith the drum 13. one step for each revolu-- tion of the drum [5.

From one side of the gear wheel 4i project two pins 42, which are arranged to engage the teeth of aratchet wheel 43, rotatably mounted on the shaft 33, to intermittently rotate the same, and said ratchet wheel 43 is fast to a pinion 44, which meshes with a gear wheel fastened to the hour drum ll. The hour dlllll'l 1'! displays the hours 1 to 12 inclusive, circumferentially around its cylindrical face (see Fig. 8), and is given a complete revolution once in each twelve hours.

From the hour wheel I! projects a shaft 45, over which is telescoped a sleeve 49 that carries a pinion 41 on one end which meshes with idler 48, rotatably mounted on the shaft 39, and which meshes with a gear wheel 49 fast on the hour drum 25. Thus step by step motion is imparted to the hour drum 25 from the drum H, whereby the hour drum 25 is simultaneously and intermitently rotated with the hour drum l1.

Radially extending pins 5! are mounted in the hour drum 25, there being one pin for each series of hour indicating numerals, which extend cylindrically about the hour drum 25, said pins being disposed helically about the cylindrical face of the hour drum 25. If desired the pins 5i may be slidably mounted in the hour drum and spring-pressed in an outward direction by springs 52. The purpose of this is to enable the pins 5! to be pressed back in case their free ends engage with any portion of the case of the clock.

Projecting from one side of each day indicating drum 2'! is a ratchet wheel 53, and said pins 5! are respectively arranged to engage the teeth of said ratchet wheels 53, and to engage them one tooth at a time, whereby to advance the drums 21 on step at a time. Each pin 5! is located on the face of the drum 25, in proper relation to the numeral l2 midnight of its associated hour rotation, so that the associated day indicating drum is rotated one step when the notation 12 midnight becomes visible.

Mounted On a cross-bar 54 are spring detents 55, one for each ratchet wheel 53, and engaging the teeth thereof. These detents serve to yieldably hold the ratchet wheels 53 and therewith the day indicating drums 2'! stationary.

Associated with the minute drums I8, l9, and one hour drum ll, are spring urged detents 56, which enter recesses 51 in the faces of the drums and yieldably hold said drums in stationary position while at rest. The dctents 56 may be slidably mounted in socket members 58, mounted on cross-bars 59, carried by the side frame members 25.

In order to set the hour drum 25 for daylight saving time, the sleeve 49 is provided with a slot 60, through which extends a pin 5! secured in the shaft 48, and forming the driving connection for the sleeve. A coiled compression spring 53, between the shaft 46 and end of one sleeve 49, serves to hold the sleeve in its normal position of operation. In order to set the hour drum 25 for daylight saving time, the sleeve 49 is pushed back along the shaft 46, demeshing the pinions 41, 48; the hour drum 25 is advanced one step and the sleeve released, permitting the spring 63 to shaft the sleeve and intermesh said pinions.

In the operation of a clock, the motor 28 rotates drive shaft 33 at a speed of one revolution per minute, and the drive shaft 30 rotates the seconds drum 20 one complete revolution per minute through a gear 32, idlers 33, 34 and gear 3! thereby consecutively displaying the numerals indicating the seconds through the window IS.

The shaft 35 also intermittently rotates the minutes drum [9 through the arm 35 and pins 35, 3?, one step for each complete revolution of the seconds wheel, thereby displaying the numerals indicating minutes through the window Hi. The minutes drum l9, intermittently rotates the minutes drum l8 through the pin 31, ratchet wheel 38, shaft 39, the pinion 43 and gear wheel 4|, thereby consecutively displaying the numerals indicating the tens column of minutes through the window I3.

The minutes drum l 8 rotates the hour drum I! through the pins 42, ratchet wheel 43, pinion 44 and gear wheel 45, thereby displaying the numerals indicating the hours through the window l2.

The hour drum I! intermittently drives the hour drum 25 through the shaft 46, sleeve 49 and gear wheels 41, 48, 49, thereby displaying the corresponding hours of the day and night at the various geographical locations displayed on the plate 23. The hour drum 25 intermittently drives the day indicating drums 21 through the pins 5| and ratchet wheels 53, thereby advancing a day indicating drum when the numeral l2, indicating midnight for that day indicating drum, appears in the slot 2 l.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the spirit of my invention; hence I do not wish to be understood as limiting myself to the exact form, construction, arrangement and combination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by letters patent is:

1. In a clock, the combination of a case having two parallel elongated slots in a wall thereof, an elongated plate between said slots having a series of geographical locations displayed thereon, an hour drum rotatably mounted behind one of said slots, and having the hours of the day and night displayed around its cylindrical surface and arranged in several series running lengthwise of the drum, one series of hour indications being simultaneously visible through the slot behind which the drum is journaled, day indicating drums rota tably mounted behind the other slot, and each having the days of the week displayed thereon, a driving motor, driving connections between said motor and hour drum, and means carried by said hour drum for intermittently rotating the day indicating drums one at a time.

2. In a clock, the combination of a case having two parallel elongated slots in a wall thereof, an elongated plate between said slots having a series of geographical locations displayed thereon, an hour drum rotatably mounted behind one of said slots, and having the hours of the day and night displayed around its cylindrical surface, and arranged in several series running lengthwise of the drum, one series of hour indications being simultaneously visible through the slot behind which the drum is journaled, day indicating drums rotatably mounted behind the other slot, and each having the days of the week displayed thereon, a ratchet wheel carried by each day indicating drum, 2. driving motor, driving connections between said motor and hour drum and pins carried by said hour drum, and arranged to engage and intermittently rotate the ratchet wheels and therewith the day indicating drums, one at a time.

3. In a clock, the combination of a case having windows in one wall, hour, minute and seconds drums rotatably mounted behind said windows, said wall having also two parallel elongated slots, an elongated plate between said slots, having a series of geographical locations displayed thereon, an hour drum rotatably mounted behind one of said slots, and having the hours of the day and night displayed around its cylindrical surface, and arranged in several series running lengthwise of the drum, one series of hour indications being simultaneously visible through the slot behind which the drum is journaled, day indication drums rotatably mounted behind the other slot and each having the days of the week displayed thereon, a driving motor, driving connections between said motor and the seconds, minutes and first mentioned hour drum, driving connections between said first mentioned hour drum and second mentioned hour drum, and means carried by the second named hour drum for intermittently rotating the day indicating drums, one at a time.

4. In a clock, the combination of a case, having windows in one wall, hour, minutes and seconds drums rotatably mounted behind said windows,

said wall having also two parallel elongated slots, an elongated plate between said slots having a series of geographical locations displayed thereon, an hour drum rotatably mounted behind one of said slots, and having the hours of the day and night displayed around its cylindrical surface, and arranged in several series running lengthwise of the drum, one series of hour indications being simultaneously visible through the slot behind which the drum is journaled, day indicating drums rotatably mounted behind the other slot, and each having the days of the week displayed thereon, a ratchet wheel carried by each day indicating drum, a driving motor, driving connections between said motor and the seconds, minutes and first named hour drum, and driving connections between said first named hour drum and said second named hour drum, and pins carried by the second named hour drum arranged to engage and intermittently rotate the ratchet wheels and therewith the day indicating drums one at a time.

5. In a clock, the combination of a case having windows in one wall, hour, minutes and seconds drums rotatably mounted behind said windows, said wall having also two parallel elongated slots, an elongated plate between said slots, having a series of geographical locations dislayed thereon, a second hour drum rotatably mounted behind one of said slots, and having the hours of the day and night displayed around its cylindrical surface, and arranged in several series running lengthwise of the drum, one series of hour indications being simultaneously visible through the slot behind which the drum is journaled, a shaft driven by said first named hour drum, a sleeve telescoping said shaft and connected to rotate therewith, said sleeve being slidable upon said shaft, and drive gearing between said sleeve and second named hour drum.

6.111 a clock, the combination of an hour drum having the hours of the day and night displayed around its cylindrical surface, and arranged in several series runnin lengthwise of the drum, one series of hour indications being simultaneously visible, day indicating drums having the days of the week displayed thereon, a ratchet wheel carried by each day drum, pins projecting from said hour drum and arranged to engage said ratchet wheels and advance them one step at a time, resilient detents engaging said ratchet wheels to yieldably hold them stationary, and a support for said detents.

'7. In a clock, the combination or" a minutes drum, a motor driven shaft, an arm mounted on said shaft, pins projecting from said minutes drum, one of which is of greater length than the others, a ratchet wheel adapted to be intermittently rotated by said long pin, a pinion, both the ratchet wheel and pinion being connected together to rotate in unison, a second minutes drum having a gear wheel secured thereto and driven by said pinion, an hour drum and driving connections between the second named minutes drum and hour drum.

8. In a clock, the combination of a clock case, a motor, time indicating means for displaying the hours of the day, the minutes of the hour, and the seconds, driving connections between said motor and said time indicating members, a plate having geographical locations of the earths surface dlsplayed thereon, there being sight openings contiguous with said plate, a time indicating drum having twenty-four hour series, each displaying the twenty-four hours of the day, and other drums having the days of the Week displayed thereon, said last named time and day indicating members being visible through said sight openings, and driving connections between said motor and said time and day indicating members.

9. In a clock, the combination of an hour drum, having series of the hour indications of the day and night arranged around its circumference, each series comprising a part of a series of the hour indications of the day and night at various geographical locations around the earths surface, extending lengthwise of the drum, a. motor and driving connections between the motor and drum for hourly intermittently r0- iating the one step at a time, a series of REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,343,613 Goldsmith Mar. '7, 1944 2,277,804 Wapner Mar. 31, 1942 641,540 Pheils Jan. 16, 1900 

